D-Link DI-1750 Reference Manual page 196

(01)<cr>
Please Input the code of command to be excute(0-1): 0
input 0，it will allow fast exchange between messages whose sending interface identical with the receiving
interface.
6.6.4 Configure Performance Parameters
To tune IP performance, complete any of the tasks in the following sections.
♦ Set the TCP Connection Attempt Time
♦ Set the TCP Window Size
6.6.5 Configure the Waiting Time of TCP Connection
When router processes TCP connection, if the connection isn't set up after the waiting time of TCP
connection, router will consider that the connection fails and return this result to upper applications.
User can configure the waiting time of TCP connection and the default value is 75 s. This configuration
is foreign to TCP connection and is concerned with TCP connection set up by local router.
Use command below in global configuration status to configure waiting time of TCP connection.
ip tcp synwait-time seconds
[DEFAULT@router /config/]#ip
(00)access-list
......
(19)tcp
......
Please Input the code of command to be excute(0-20): 19
input 19，Selectsource-route option ，prompt is as below:
(00)synwait-time
(01)window-size
Please Input the code of command to be excute(0-1): 0
input 0，Selectsynwait-time option ，prompt is as below:
(00)<5-300> seconds
Please Input the code of command to be excute(0-1): 0
Select 0，and input the wait time.
6.6.6 Set the TCP Window Size
The default TCP window size is 2000 bytes. To change the default window size, use the following
command in global configuration directroy.
ip tcp window-size bytes
[DEFAULT@router /config/]#ip
(00)access-list
......
(19)tcp
......
Please Input the code of command to be excute(0-20): 19
input 19，Select source-route option ，prompt is as below:
(00)synwait-time
(01)window-size
Please Input the code of command to be excute(0-1): 1
input 1，Select window-size option ，prompt is as below:
Command
Named access-list
Global TCP parameters
Set time to wait on new TCP connections
TCP window size
wait time (default 75 seconds)
Command
Named access-list
Global TCP parameters
Set time to wait on new TCP connections
TCP window size
Model Name
Function
Set the amount of time that wait to attempt to establish a
TCP connection.
Function
Set the TCP windows size.
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